Symbol Technologies MK1000 2-8, Figure 2-2. RS-485 Two-Wire Serial Network

2-8
MK1000 MicroKiosk Product Reference Guide
Figure 2-2. RS-485 Two-Wire Serial Network
1234
RS-232
GWG
1/2 W
100Ω100Ω
Rt
GW
1/2 W
1/2 W
100Ω
100Ω
4000 Ft. Maximum
Termination Resistors at Both Ends
RS-232/RS-485
Conversion Box
Rt
1 2 3 4 1 2 3 4
GWG GWG
100Ω100Ω100Ω100Ω
1/2 W
GWG Green wire ground or power
system ground
Circuit ground or circuit
common
Rt 120
Ω 1/2W
Recommended RS-485 Two-Wire Multidrop NetWork